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Your search has returned 38 articles:
  • News

    Lowering lilies on the tree of life

    New genetic analyses are shaking the lowest living branch on the family tree of flowering plants. The question is: Should we move water lilies down to that ancient lineage?

    Last summer, presentations at the International Botanical Congress in St. Louis redrew the notoriously puzzling base of the tree. On the lowest branch that still has a living sprout, they placed a living...

    08/10/2004 - 17:51 Plants
  • News

    Infectious stowaways

    While in port, shipping vessels often suck huge quantities of water into their ballast tanks to replace the stabilizing weight of cargo they've off-loaded. Along with this water comes abundant aquatic life, such as mussels and crabs, which journey with the ships—often crossing entire oceans—until the ballast is dumped in preparation for loading new goods.

    Largely ignored in this lively...

    08/10/2004 - 17:48 Earth & Environment
  • News

    Problems with eradicating polio

    Twelve years ago, the World Health Organization launched the Global Polio Eradication Initiative, with 2000 as its target for eliminating the crippling scourge. At that time, an estimated 350,000 new cases of polio emerged each year. Though the incidence of polio has been dropping dramatically, even in this deadline year, 10 new cases crop up daily somewhere within the 30 countries where the...

    08/10/2004 - 17:46 Earth & Environment
  • News

    Cancer cells on the move

    A gene recently linked to liver, skin, and pancreatic cancer also lies behind an often deadly form of breast cancer. A new study suggests how that gene causes such aggressive cancer.

    Inflammatory breast cancer accounts for about 6 percent of new breast cancer cases in the United States each year. By the time it's diagnosed, the disease has typically spread to other parts of the body....

    08/10/2004 - 17:44 Biomedicine
  • News

    Boldly into the breech controversy

    Addressing a long-simmering controversy, a large new study has shown that in pregnancies where the baby has positioned itself to emerge feet or buttocks first, the delivery safest for mother and child is a planned cesarean section, or C-section, rather than a vaginal birth.

    In 3 to 4 percent of all pregnancies, the babies end up in the so-called breech position.

    Some physicians...

    08/10/2004 - 17:43 Biomedicine